Senior executives, on-air personalities, producers, reporters, editors, writers and other self-identifying employees of ABC, CBS and NBC contributed more than $1 million to Democratic candidates and campaign committees in 2008, according to an analysis by The Examiner of data compiled by the Center for Responsive Politics.

The Democratic total of $1,020,816 was given by 1,160 employees of the three major broadcast television networks, with an average contribution of $880.

By contrast, only 193 of the employees contributed to Republican candidates and campaign committees, for a total of $142,863. The average Republican contribution was $744.

Disclosure of the heavily Democratic contributions by influential employees of the three major broadcast networks follows on the heels of controversy last week when it was learned that media baron Rupert Murdoch’s News Corp. contributed $1 million to the Republican Governors Association.

The News Corp. donation prompted Nathan Daschle, executive director of the Democratic Governors Association and son of former Senate Majority Leader Tom Daschle, to demand in a letter to Fox News chairman Roger Ailes that the cable news outlet include a disclaimer in its coverage of gubernatorial campaigns. Fox News is owned by News Corp., which also owns The Wall Street Journal.